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Finding the Fourth Proportional to 388,906.56, 583,362.48 and 108,426.24

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Solution

The fourth proportional to 388,906.56, 583,362.48 and 108,426.24 is: 162,640.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    388,906.56 : 583,362.48 = 108,426.24 : x
  2. Step 2: Convert to fraction form
    388,906.56/583,362.48 = 108,426.24/x
  3. Step 3: Cross multiply
    388,906.56x = 583,362.48 × 108,426.24
  4. Step 4: Simplify right side
    388,906.56x = 63,251,800,263.48
  5. Step 5: Solve for x
    x = 63,251,800,263.48/388,906.56
  6. Step 6: Final answer
    x = 162,640.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.